RHOPA LOCERA MA LA YA NA . 



309 



I have not as yet seen the female of tliis sjiecies, which is described by Mr. Wallace as 

 being "larger than the male, pale yellow, the discoid^l spot and transverse streak almost 

 obsolete."* The same author describes /). ijohrias as flying "slowly in forest clearings near 

 the ground, often settling in damp places."! 



Genus IXIAS. 



Uias, Hiibncr, Verz. bek. Sclimett. p. 95 (ISlfi) ; Butl. Cist. Ent. vol. i. p. 48 (1870) ; Moore, Lep. Ceyl. vol. i. 



p. 125 (1881). 

 Thestias, Boisd. Sp. Geu. i. p. 590 (1836); Doubl. Gen. Diurn. Lep. p. 60 (1847). 



Anterior wings subtriangular, costal margin arched and convex towards apex, outer margin somewhat 

 oblique and rounded at outer angle, inner margin slightly sinuate. Costal nervure very robust, terminating 

 on eosta a little beyond end of cell : first subcostal nervule emitted at about one-third before end of cell ; 

 second about midway between base of first and apex of cell ; third and fourth bifurcating somewhat nearer 

 apex of wing than end of cell ; fifth bifurcating a little beyond end of cell ; upper disco-cellular nervule 

 strongly concave, shoi-ter than the lower, which is less prominently concave ; upper median nervule from 

 end of cell, first and second median nervules nearer together than second and third ; submedian nervure 

 strongly sinuate. Posterior wings subovate, posterior margin slightly waved. Costal nervure extending 

 to about two-thirds of costal margin, first subcostal nervule emitted at about one-fourth before end of 

 cell ; disco-cellular nervules oblique, the lower one longest and bent at its junction with the upper ; 

 position of median nervules much the same as in anterior wings, submedian nervure somewhat straight. 

 Body moderately robust ; pronotum hairy ; antennae slender, of moderate length, and with a well-formed 

 apical club ; legs somewhat slender ; palpi clothed beneath with long adpressed hairs, the apical joint 

 minute. 



This genus appears to be distributed throughout India and the Indo-Malayan region ; 

 it is also found in many other parts of the Malayan Archipelago, is recorded from China, and, 

 according to Mr. Butler, is also found on the White Nile. I 



1. Ixias birdi. ? (Tab. XXVI., fig. 4 c7 .) 



Ixias Binli, Distant, Ann. & Mag. Nat. Hist. ser. 5, vol. xii. p. 351 (1883). 



Male. Anterior wings black; basal third (consisting of lower and inner half of cell obli(iuely 

 terminating at a little beyond base of lower median nervule, and from thence continued to inner margin 

 at about one-fourth from posterior angle) sulphureous ; the black area is invariably angulated beneath the 

 lower median nervule, and is crossed by a broad irregular orange-coloured fascia, divided by the black 

 nervules. commencing a little above the costal nervure, and outwardly oblique to upper discoidal nervule, 

 then convexly suberect to upper median nerrale, after which it is outwardly elongated, and terminates at 

 about the lower median nervule ; inwardly it is excavated at the disco-cellular nervules, before which and 

 in the cell it possesses an extension of two irregular spots. Posterior wings sulphureous, with a broad 

 outer black margin. Wings beneath sulphureous ; anterior wings faintly showing the orange-coloured 

 fascia above, sparingly speckled with fuscous in upper portion of cell and along the costal and outer 



* Trans. Ent. Soe. ser. 3, vol. iv. p. 398 (1867). + Ibi<l- P- 307. 



t Trans. Ent. Soc. 1871, p. 254. nos. 14 and 15. .,.,,, 



§ Named after Mrs. Bishop, who. siting under her well-known maiden name (Isabella L. Bird), is the a,.thor of 

 a recent and pleasant work on the Malay Peninsula, entitled ' The Golden Chersonese. 



June 20, 1885. ^ 



